Isolated Electron Trap-Induced Charge Accumulation for Efficient Photocatalytic Hydrogen Production

Wenhuan Huang, Chenyang Su, Chen Zhu, Tingting Bo, Shouwei Zuo, Wei Zhou, Yuanfu Ren, Yanan Zhang, Jing Zhang, Magnus Rueping*, Huabin Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

The solar-driven evolution of hydrogen from water using particulate photocatalysts is considered one of the most economical and promising protocols for achieving a stable supply of renewable energy. However, the efficiency of photocatalytic water splitting is far from satisfactory due to the sluggish electron-hole pair separation kinetics. Herein, isolated Mo atoms in a high oxidation state have been incorporated into the lattice of Cd0.5Zn0.5S (CZS@Mo) nanorods, which exhibit photocatalytic hydrogen evolution rate of 11.32 mmol g−1 h−1 (226.4 μmol h−1; catalyst dosage 20 mg). Experimental and theoretical simulation results imply that the highly oxidized Mo species lead to mobile-charge imbalances in CZS and induce the directional photogenerated electrons transfer, resulting in effectively inhibited electron-hole recombination and greatly enhanced photocatalytic efficiency.

Original languageEnglish (US)
Article numbere202304634
JournalAngewandte Chemie - International Edition
Volume62
Issue number25
DOIs
StatePublished - Jun 19 2023

Bibliographical note

Funding Information:
This work received financial support from the King Abdullah University of Science and Technology (KAUST), National Natural Science Foundation of China (22001156, 22271178), International Cooperation Key Project of Science and Technology Department of Shaanxi, China (2022KWZ‐06), the Youth Talent Promotion Project of Science and Technology Association of Universities of Shaanxi Province (20210602), Research project of Xi′an Science and Technology Bureau (2022GXFW0011), and Science and Technology New Star in Shaanxi Province (2023KJXX‐045).

Funding Information:
This work received financial support from the King Abdullah University of Science and Technology (KAUST), National Natural Science Foundation of China (22001156, 22271178), International Cooperation Key Project of Science and Technology Department of Shaanxi, China (2022KWZ-06), the Youth Talent Promotion Project of Science and Technology Association of Universities of Shaanxi Province (20210602), Research project of Xi′an Science and Technology Bureau (2022GXFW0011), and Science and Technology New Star in Shaanxi Province (2023KJXX-045).

Publisher Copyright:
© 2023 Wiley-VCH GmbH.

Keywords

  • Electron Pump
  • High-Oxidation State
  • Photocatalysis
  • Single-Atom Catalysts
  • Water Splitting

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry

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